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3 years ago

Are these two ratios equivalent? Why or Why not? 4:5 12:15.

Mathematics

1 answer:

Lyrx [107]3 years ago

8 0

Answer:

yes

Step-by-step explanation:

12 ÷ 4 = 3

15 ÷ 5 = 3

yes they are equivalent.

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14. The cost of 10 dozen of caps is Rs.800. How many caps can bebought for Rs.200.

kvasek [131]

Answer:

123 456lcm divison method

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3 years ago

Almost all medical schools in the United States require students to take the Medical College Admission Test (MCAT). To estimate

yKpoI14uk [10]

Answer:

a) 0.5588

b) 0.9984

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 24

Standard Deviation, σ = 6.4

We are given that the distribution of score is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

a) P(score between 20 and 30)

$P(20 \leq x \leq 30) = P(\displaystyle\frac{20 - 24}{6.4} \leq z \leq \displaystyle\frac{30-24}{6.4}) = P(-0.62 \leq z \leq 0.94)\\\\= P(z \leq 0.94) - P(z < -0.62)\\= 0.8264 - 0.2676 = 0.5588 = 55.88\%$

$P(20 \leq x \leq 30) = 55.88\%$

b) Sampling distribution

Sample size, n = 22

The sample will follow a normal distribution with mean 24 and standard deviation,

$s = \dfrac{\sigma}{\sqrt{n}} = \dfrac{6.4}{\sqrt{22}} =1.36$

c) P(mean score of sample is between 20 and 30)

$P(20 \leq x \leq 30) = P(\displaystyle\frac{20 - 24}{1.36} \leq z \leq \displaystyle\frac{30-24}{1.36}) = P(-2.94 \leq z \leq 4.41)\\\\= P(z \leq 4.41) - P(z < -2.94)\\= 1 - 0.0016 = 0.9984 = 99.84\%$

$P(20 \leq x \leq 30) =99.84\%$

5 0

4 years ago

Mia is ordering 5 identical sandwiches and a bag of chips. The bag of chips costs $1.25, and the entire order costs $38.75. Writ

Greeley [361]

Answer:

The equation that can be use to determine the price of a sandwich is 5x + $1.25 = $38.75

Step-by-step explanation:

The equation that can be use to determine the price of a sandwich is as follows:

Let us assume the price of a sandwich be x

So,

The equation would be

5x + $1.25 = $38.75

5x = $38.75 - $1.25

x = $37.5 ÷ 5

x = $7.5

hence, the equation that can be use to determine the price of a sandwich is 5x + $1.25 = $38.75

3 0

3 years ago

Please help immediately

sertanlavr [38]

Answer:

-4,0

Step-by-step explanation:

4 0

3 years ago

Evaluate (x + y)0 for x = -3 and y = 5.-012

Vlad1618 [11]

Answer:

Step-by-step explanation:

(x+y)0

(-3+5.-012)0

anything times 0 is 0

8 0

3 years ago

Are these two ratios equivalent? Why or Why not? 4:5 12:15.​

Are these two ratios equivalent? Why or Why not? 4:5 12:15.